634013 has 2 divisors, whose sum is σ = 634014. Its totient is φ = 634012.

The previous prime is 634003. The next prime is 634031. The reversal of 634013 is 310436.

Together with next prime (634031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 344569 + 289444 = 587^2 + 538^2 .

It is a cyclic number.

It is not a de Polignac number, because 634013 - 2⁸ = 633757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 633982 and 634000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317006 + 317007.

It is an arithmetic number, because the mean of its divisors is an integer number (317007).

2⁶³⁴⁰¹³ is an apocalyptic number.

It is an amenable number.

634013 is a deficient number, since it is larger than the sum of its proper divisors (1).

634013 is an equidigital number, since it uses as much as digits as its factorization.

634013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 634013 is about 796.2493328098. The cubic root of 634013 is about 85.9078244425.

Adding to 634013 its reverse (310436), we get a palindrome (944449).

The spelling of 634013 in words is "six hundred thirty-four thousand, thirteen".